價格：免費
檔案大小：1.5 MB
版本需求：需要 iOS 9.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
This app allows for pilots to test and to improve their mental mathematical calculations skills in the context of air navigation:
- bearings and its reciprocals
- basic multiplication and division
- speed, time and distance problems
- the one-to-sixty rule (LNAV/VNAV)
A 'try me' button generates random problems. The entered solutions are checked and a correct/wrong indication is provided.
支援平台：iPhone, iPad